--- product_id: 14103950 title: "# 6509 Iridium Spark Plug LTR6IX-11 - 6 PCSNEW" brand: "ngk" price: "S$89" currency: SGD in_stock: true reviews_count: 13 category: "Ngk" url: https://www.desertcart.sg/products/14103950-6509-iridium-spark-plug-ltr6ix-11-6-pcsnew store_origin: SG region: Singapore --- # Iridium core for superior ignition Pack of 6 for full engine refresh Vehicle-specific 14mm thread fit # 6509 Iridium Spark Plug LTR6IX-11 - 6 PCSNEW **Brand:** ngk **Price:** S$89 **Availability:** ✅ In Stock ## Summary > ⚡ Ignite your drive with NGK Iridium – where power meets precision! ## Quick Answers - **What is this?** # 6509 Iridium Spark Plug LTR6IX-11 - 6 PCSNEW by ngk - **How much does it cost?** S$89 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/14103950-6509-iridium-spark-plug-ltr6ix-11-6-pcsnew) ## Best For - ngk enthusiasts ## Why This Product - Trusted ngk brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Complete 6-Pack Set:** Everything you need to upgrade your entire engine’s spark plugs in one purchase—no mid-project runs to the store. - • **Tailored Vehicle Fit:** Designed specifically for cars and trucks ensuring hassle-free installation and optimal compatibility. - • **Precision Iridium Core:** Delivers unmatched spark efficiency and longevity for peak engine performance. - • **Trusted Brand Excellence:** NGK’s #6509 model boasts a 4.7-star rating from over 2,500 users, blending reliability with rave reviews. - • **Cost-Effective Performance:** Half the price of major retailers without compromising quality—smart savings for savvy professionals. ## Overview The NGK #6509 Iridium Spark Plug LTR6IX-11 comes in a convenient 6-pack, engineered with a durable iridium core and a 14mm thread size tailored for specific car and truck models. Renowned for its reliability and efficiency, this spark plug is a top choice among automotive professionals and enthusiasts, offering premium performance at a competitive price point backed by a strong manufacturer warranty. ## Description Sold in packs of 6. Review: Seemed a match to my Factory 2017 Acadia Limited plugs - Half price of same item at AutoZone/Advanced Auto/Napa, Napa said they would price match, but showed up and they were closed early due to computer issues. Saw a lot of reviews about cracked porcelain, I inspected mine, and we're fine. They do send you a 4 pack and 2 individuals taped to 4 pack. I am suspect of all those porcelain breaks and thinking more operator error than product defect. I installed in 2017 GMC Acadia Limited with 127k on OG plugs, runs great! Little more challenging than most other plug swaps, but got it done! Review: Good Genuine Sparkplugs - The spark plugs came as a 4 pack plus 2 in separate boxes. All genuine. They were used in my Ford Flex with the naturally aspirated 3.5L V6. Keep in mind that the naturally aspirated and twin turbo versions of this Ford engine have different spark plug gap requirements. The naturally aspirated engine has a larger gap than the turbo version. Unfortunately I do not remember if the gap brand new out of the box was set for naturally aspirated or turbo equipped engines. ## Features - Sold in packs of 6 ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00J62NNAC | | Automotive Fit Type | Vehicle Specific Fit | | Best Sellers Rank | #9,540 in Automotive ( See Top 100 in Automotive ) #36 in Automotive Replacement Spark Plugs | | Brand | NGK | | Brand Name | NGK | | Compatible with Vehicle Type | Car, Truck | | Core Material | Iridium | | Customer Reviews | 4.7 out of 5 stars 2,534 Reviews | | Included Components | 6509 | | Item Weight | 10.56 ounces | | Manufacturer | NGK | | Manufacturer Part Number | 6509 | | Manufacturer Warranty Description | Includes manufacturer provided warranty | | Model Number | LTR6IX-11 | | Number of Items | 6 | | OEM Equivalent Part Number | 6509 | | Thread Size | 14mm | | Top Material Type | Iridium | | UPC | 087295065099 | | Unit Count | 1 Count | | Vehicle Service Type | Car, Truck | ## Product Details - **Brand:** NGK - **Core Material:** Iridium - **Thread Size:** 14mm - **Top Material Type:** Iridium - **Vehicle Service Type:** Car, Truck ## Images ![# 6509 Iridium Spark Plug LTR6IX-11 - 6 PCSNEW - Image 1](https://m.media-amazon.com/images/I/619zkWbYNZL.jpg) ## Questions & Answers **Q: Are these genuine NGK plugs** A: Yes they are. Put them in a 2012 Cadillac. Car is still running just fine. **Q: Gap was .041, spark plug off my 2011 Mustang V6 were 0.050, why the difference?** A: Most all plugs come new at around .038. they have to be gapped according to specs by the engine manufacturer. Worn plugs will have a wider gap due to deteriorated metal and heat. **Q: Has anyone tried this on a lincoln mkx?** A: must be applied by engine size not car model **Q: Is it fit Volkswagen Tiguan 2.0 tsi** A: NGK has multiple grades of plugs that may fit your vehicle. It is recommended to go to NGK site at https://ngksparkplugs.com/en/part-finder to verify the applications that will fit your vehicle. This site will show you all of the available plugs to fit your vehicle and will also show you which grade plug is recommended for the best performance of your specific engine. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Seemed a match to my Factory 2017 Acadia Limited plugs *by R***F on February 16, 2026* Half price of same item at AutoZone/Advanced Auto/Napa, Napa said they would price match, but showed up and they were closed early due to computer issues. Saw a lot of reviews about cracked porcelain, I inspected mine, and we're fine. They do send you a 4 pack and 2 individuals taped to 4 pack. I am suspect of all those porcelain breaks and thinking more operator error than product defect. I installed in 2017 GMC Acadia Limited with 127k on OG plugs, runs great! Little more challenging than most other plug swaps, but got it done! ### ⭐⭐⭐⭐⭐ Good Genuine Sparkplugs *by S***M on October 26, 2025* The spark plugs came as a 4 pack plus 2 in separate boxes. All genuine. They were used in my Ford Flex with the naturally aspirated 3.5L V6. Keep in mind that the naturally aspirated and twin turbo versions of this Ford engine have different spark plug gap requirements. The naturally aspirated engine has a larger gap than the turbo version. Unfortunately I do not remember if the gap brand new out of the box was set for naturally aspirated or turbo equipped engines. ### ⭐⭐⭐⭐⭐ Plugs *by B***T on August 4, 2026* Great fit ## Frequently Bought Together - NGK # 6509 Iridium Spark Plug LTR6IX-11 - 6 PCSNEW - FEL-PRO MS 97214 Fuel Injection Plenum Gasket Set for Ford Edge - Ignition Coil Pack Replacement for 3.5 3.7 V6 Ford Edge Explorer F150 Flex MKS MKT MKZ, Mazda 6 CX-9 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 3.7L 3.5L, UF553 DG520, Pack of 6 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/14103950-6509-iridium-spark-plug-ltr6ix-11-6-pcsnew](https://www.desertcart.sg/products/14103950-6509-iridium-spark-plug-ltr6ix-11-6-pcsnew) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-08-18*